{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://developer-tripadvisor.com/schemas/tripadvisor/hotel-availability.json",
  "title": "Tripadvisor Hotel Availability Response",
  "description": "The response payload returned by a partner's availability endpoint when Tripadvisor checks hotel pricing and room availability in real-time via the Hotel Availability Check (HAC) API v8.",
  "type": "object",
  "required": ["api_version", "hotels"],
  "properties": {
    "api_version": {
      "type": "integer",
      "description": "The API version number of this response.",
      "const": 8
    },
    "hotels": {
      "type": "array",
      "description": "Array of hotel availability results, one per requested hotel.",
      "items": {
        "$ref": "#/$defs/HotelAvailability"
      }
    },
    "errors": {
      "type": "array",
      "description": "Array of errors encountered during the availability check.",
      "items": {
        "$ref": "#/$defs/AvailabilityError"
      }
    }
  },
  "$defs": {
    "HotelAvailability": {
      "type": "object",
      "description": "Availability and pricing information for a single hotel property.",
      "required": ["hotel_id", "availability"],
      "properties": {
        "hotel_id": {
          "type": "string",
          "description": "The partner's internal hotel ID matching the request."
        },
        "availability": {
          "type": "string",
          "description": "The availability status for this hotel.",
          "enum": ["available", "unavailable", "error"]
        },
        "room_types": {
          "type": "object",
          "description": "Map from room type keys to room type objects. Must include an entry for every unique room_type_key used in room_rates.",
          "additionalProperties": {
            "$ref": "#/$defs/RoomType"
          }
        },
        "room_rates": {
          "type": "object",
          "description": "Map from room rate keys to room rate objects containing pricing details.",
          "additionalProperties": {
            "$ref": "#/$defs/RoomRate"
          }
        },
        "url": {
          "type": "string",
          "format": "uri",
          "description": "Deep link URL to the partner's booking page for this hotel."
        }
      }
    },
    "RoomType": {
      "type": "object",
      "description": "A room type available at the hotel.",
      "properties": {
        "url": {
          "type": "string",
          "format": "uri",
          "description": "Deep link URL to the booking page for this room type."
        },
        "description": {
          "type": "string",
          "description": "A description of the room type."
        },
        "room_type_code": {
          "type": "string",
          "description": "Persistent room type code that identifies this room type across requests."
        },
        "photos": {
          "type": "array",
          "description": "Array of photos for this room type.",
          "items": {
            "type": "object",
            "properties": {
              "url": {
                "type": "string",
                "format": "uri",
                "description": "URL of the room type photo."
              },
              "caption": {
                "type": "string",
                "description": "Caption for the room type photo."
              }
            }
          }
        },
        "amenities": {
          "type": "array",
          "description": "Array of amenity names available in this room type.",
          "items": {
            "type": "string"
          }
        },
        "max_occupancy": {
          "type": "integer",
          "description": "The maximum number of guests for this room type.",
          "minimum": 1
        },
        "bed_types": {
          "type": "array",
          "description": "Array of bed type descriptions.",
          "items": {
            "type": "string"
          }
        }
      }
    },
    "RoomRate": {
      "type": "object",
      "description": "Pricing details for a specific room rate.",
      "required": ["room_type_key", "line_items"],
      "properties": {
        "room_type_key": {
          "type": "string",
          "description": "Key referencing the room type this rate applies to."
        },
        "rate_plan_code": {
          "type": "string",
          "description": "Persistent rate plan code identifying this rate across requests."
        },
        "rate_plan_description": {
          "type": "string",
          "description": "Description of the rate plan."
        },
        "url": {
          "type": "string",
          "format": "uri",
          "description": "Deep link URL to book at this rate."
        },
        "line_items": {
          "type": "array",
          "description": "Array of line item objects for rate, tax, and fee breakdowns.",
          "items": {
            "$ref": "#/$defs/LineItem"
          },
          "minItems": 1
        },
        "cancellation_rules": {
          "$ref": "#/$defs/CancellationRules"
        },
        "occupancy": {
          "type": "integer",
          "description": "The number of guests this rate is for.",
          "minimum": 1
        },
        "is_refundable": {
          "type": "boolean",
          "description": "Whether this rate is refundable."
        },
        "meal_plan": {
          "type": "string",
          "description": "The meal plan included with this rate.",
          "enum": ["none", "breakfast", "half_board", "full_board", "all_inclusive"]
        }
      }
    },
    "LineItem": {
      "type": "object",
      "description": "A pricing line item representing a rate, tax, or fee component.",
      "required": ["type", "price", "currency"],
      "properties": {
        "type": {
          "type": "string",
          "description": "The line item type.",
          "enum": ["rate", "tax", "fee"]
        },
        "sub_type": {
          "type": "string",
          "description": "The sub-type providing more detail about the line item."
        },
        "price": {
          "type": "number",
          "description": "The monetary amount for this line item.",
          "minimum": 0
        },
        "currency": {
          "type": "string",
          "description": "The three-letter ISO 4217 currency code.",
          "minLength": 3,
          "maxLength": 3
        },
        "paid_at_checkout": {
          "type": "boolean",
          "description": "Whether this amount is paid at checkout rather than at booking time."
        }
      }
    },
    "CancellationRules": {
      "type": "object",
      "description": "Cancellation policy rules for a room rate with time-windowed penalties.",
      "properties": {
        "free_cancellation": {
          "type": "boolean",
          "description": "Whether free cancellation is available."
        },
        "rules": {
          "type": "array",
          "description": "Array of cancellation rule periods with associated penalties.",
          "items": {
            "type": "object",
            "properties": {
              "start": {
                "type": "string",
                "format": "date-time",
                "description": "The start date-time of this cancellation policy window."
              },
              "end": {
                "type": "string",
                "format": "date-time",
                "description": "The end date-time of this cancellation policy window."
              },
              "penalty_amount": {
                "type": "number",
                "description": "The penalty amount charged if cancelled during this period.",
                "minimum": 0
              },
              "penalty_currency": {
                "type": "string",
                "description": "The currency of the penalty amount.",
                "minLength": 3,
                "maxLength": 3
              },
              "penalty_type": {
                "type": "string",
                "description": "The type of penalty applied.",
                "enum": ["amount", "percentage", "nights"]
              }
            }
          }
        }
      }
    },
    "AvailabilityError": {
      "type": "object",
      "description": "An error encountered for a specific hotel during the availability check.",
      "required": ["hotel_id"],
      "properties": {
        "hotel_id": {
          "type": "string",
          "description": "The partner hotel ID that experienced the error."
        },
        "error_type": {
          "type": "string",
          "description": "The classification of the error."
        },
        "message": {
          "type": "string",
          "description": "A human-readable error message describing what went wrong."
        }
      }
    }
  }
}